Current Conditions

Grayslake, Illinois

91°F33°C

Drizzle

Feels like99°F37°C

Wind

SW 9 mph14 km/h

Humidity

54%

Cloud Cover

53%

As of Wednesday, September 2, 2026 at 3:57 PM CDT

Today's Outlook

Day

Partly cloudy and hot, with a high of 91°F33°C — feels like 99°F37°C. Breezy from the SW at 8 to 9 mph14 to 14 km/h. 10% chance of drizzle in the afternoon. Heat risk in the afternoon.

Night

Partly cloudy, with a low around 81°F27°C. Light wind from the SW around 5 mph8 km/h. 21% chance of drizzle throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 91°F33°CFeels 99°F37°C	Low 81°F27°C	Precip 0.04 in0.9 mm21%	Cloud 37%	Wind SW 7 mph11 km/h	Wednesday: Partly cloudy and hot, with a high of 91°F33°C — feels like 99°F37°C. Breezy from the SW at 8 to 9 mph14 to 14 km/h. 10% chance of drizzle in the afternoon. Heat risk in the afternoon. Wednesday Night: Partly cloudy, with a low around 81°F27°C. Light wind from the SW around 5 mph8 km/h. 21% chance of drizzle throughout the night.
Drizzle	High 86°F30°CFeels 92°F33°C	Low 77°F25°C	Precip 0.06 in1.5 mm26%	Cloud 50%	Wind SSW 6 mph10 km/h	Thursday: Mostly cloudy and warm, with a high of 86°F30°C and morning low of 77°F25°C — feels like 91°F33°C. Light wind from the SW around 6 mph9 km/h. 26% chance of drizzle throughout the day. Heavy, humid air. Thursday Night: Partly cloudy, with a low around 77°F25°C. Light wind from the SSE around 6 mph10 km/h. 18% chance of drizzle throughout the night.
Showers	High 87°F31°CFeels 95°F35°C	Low 75°F24°C	Precip 0.13 in3.3 mm42%	Cloud 65%	Wind ESE 6 mph10 km/h	Friday: Mostly cloudy and hot, with a high of 87°F31°C and morning low of 75°F24°C — feels like 95°F35°C. Breezy from the SSE at 6 to 7 mph10 to 11 km/h. 21% chance of drizzle in the morning. Heavy, humid air. Friday Night: Mostly cloudy, with a low around 76°F24°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. 42% chance of showers throughout the night.
Showers	High 79°F26°C	Low 72°F22°C	Precip 0.13 in3.3 mm29%	Cloud 55%	Wind NE 7 mph12 km/h	Saturday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 74°F23°C. Breezy from the NE at 8 to 9 mph12 to 15 km/h. 29% chance of showers throughout the day. Heavy, humid air. Saturday Night: Partly cloudy, with a low around 72°F22°C. Breezy from the NE at 7 to 9 mph12 to 14 km/h. 29% chance of showers overnight.
Partly Cloudy	High 77°F25°C	Low 70°F21°C	Precip 0.03 in0.8 mm6%	Cloud 55%	Wind E 7 mph11 km/h	Sunday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 70°F21°C. Breezy from the E at 7 to 8 mph12 to 14 km/h. Humid. Sunday Night: Mostly cloudy, with a low around 70°F21°C. Breezy from the ENE at 7 mph11 km/h.
Partly Cloudy	High 79°F26°C	Low 68°F20°C	Precip 0.01 in0.3 mm5%	Cloud 58%	Wind ESE 7 mph11 km/h	Monday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 68°F20°C. Breezy from the SE at 7 to 8 mph11 to 14 km/h. Monday Night: Mostly cloudy, with a low around 70°F21°C. Breezy from the ESE at 7 to 8 mph11 to 13 km/h.
Partly Cloudy	High 85°F29°C	Low 69°F20°C	Precip 0.02 in0.5 mm7%	Cloud 65%	Wind S 9 mph15 km/h	Tuesday: Mostly cloudy and warm, with a high of 85°F29°C and morning low of 69°F20°C. Breezy from the S at 9 to 10 mph15 to 17 km/h. Tuesday Night: Mostly cloudy, with a low around 70°F21°C. Breezy from the SSE at 9 to 11 mph15 to 18 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	91°F33°C Feels 99°F37°C	81°F27°C	0.04 in0.9 mm· 21%	37%	Drizzle	SW 7 mph11 km/h
DayPartly cloudy and hot, with a high of 91°F33°C — feels like 99°F37°C. Breezy from the SW at 8 to 9 mph14 to 14 km/h. 10% chance of drizzle in the afternoon. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Light wind from the SW around 5 mph8 km/h. 21% chance of drizzle throughout the night.
	ThursdaySep 3	86°F30°C Feels 92°F33°C	77°F25°C	0.06 in1.5 mm· 26%	50%	Drizzle	SSW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 86°F30°C and morning low of 77°F25°C — feels like 91°F33°C. Light wind from the SW around 6 mph9 km/h. 26% chance of drizzle throughout the day. Heavy, humid air. NightPartly cloudy, with a low around 77°F25°C. Light wind from the SSE around 6 mph10 km/h. 18% chance of drizzle throughout the night.
	FridaySep 4	87°F31°C Feels 95°F35°C	75°F24°C	0.13 in3.3 mm· 42%	65%	Showers	ESE 6 mph10 km/h
DayMostly cloudy and hot, with a high of 87°F31°C and morning low of 75°F24°C — feels like 95°F35°C. Breezy from the SSE at 6 to 7 mph10 to 11 km/h. 21% chance of drizzle in the morning. Heavy, humid air. NightMostly cloudy, with a low around 76°F24°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. 42% chance of showers throughout the night.
	SaturdaySep 5	79°F26°C	72°F22°C	0.13 in3.3 mm· 29%	55%	Showers	NE 7 mph12 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 74°F23°C. Breezy from the NE at 8 to 9 mph12 to 15 km/h. 29% chance of showers throughout the day. Heavy, humid air. NightPartly cloudy, with a low around 72°F22°C. Breezy from the NE at 7 to 9 mph12 to 14 km/h. 29% chance of showers overnight.
	SundaySep 6	77°F25°C	70°F21°C	0.03 in0.8 mm· 6%	55%	Partly Cloudy	E 7 mph11 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 70°F21°C. Breezy from the E at 7 to 8 mph12 to 14 km/h. Humid. NightMostly cloudy, with a low around 70°F21°C. Breezy from the ENE at 7 mph11 km/h.
	MondaySep 7	79°F26°C	68°F20°C	0.01 in0.3 mm· 5%	58%	Partly Cloudy	ESE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 68°F20°C. Breezy from the SE at 7 to 8 mph11 to 14 km/h. NightMostly cloudy, with a low around 70°F21°C. Breezy from the ESE at 7 to 8 mph11 to 13 km/h.
	TuesdaySep 8	85°F29°C	69°F20°C	0.02 in0.5 mm· 7%	65%	Partly Cloudy	S 9 mph15 km/h
DayMostly cloudy and warm, with a high of 85°F29°C and morning low of 69°F20°C. Breezy from the S at 9 to 10 mph15 to 17 km/h. NightMostly cloudy, with a low around 70°F21°C. Breezy from the SSE at 9 to 11 mph15 to 18 km/h.
	WednesdaySep 9	88°F31°C Feels 92°F34°C	76°F24°C	0.06 in1.6 mm· 14%	48%	Drizzle	SW 10 mph16 km/h
DayPartly cloudy and hot, with a high of 88°F31°C and morning low of 76°F24°C. Breezy from the SW at 10 mph16 km/h. 13% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 77°F25°C. Breezy from the SW at 10 to 12 mph16 to 19 km/h. 14% chance of drizzle throughout the night.
	ThursdaySep 10	82°F28°C	72°F22°C	0.15 in3.9 mm· 26%	53%	Showers	W 9 mph14 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 72°F22°C. Breezy from the W at 9 mph14 km/h. 22% chance of showers throughout the day. NightMostly cloudy, with a low around 73°F23°C. Breezy from the W at 9 to 10 mph14 to 15 km/h. 26% chance of showers throughout the night.
	FridaySep 11	80°F26°C	68°F20°C	0.17 in4.4 mm· 23%	51%	Showers	S 8 mph13 km/h
DayMostly cloudy and warm, with a high of 80°F26°C and morning low of 68°F20°C. Breezy from the SSW at 9 mph14 km/h. 23% chance of showers throughout the day. NightPartly cloudy, with a low around 69°F21°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 21% chance of showers throughout the night.
	SaturdaySep 12	80°F27°C	68°F20°C	0.19 in4.7 mm· 24%	56%	Showers	SSW 10 mph16 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 68°F20°C. Breezy from the SSW at 10 mph16 km/h. 24% chance of showers throughout the day. NightMostly cloudy, with a low around 69°F21°C. Breezy from the SSW at 9 to 10 mph15 to 16 km/h. 20% chance of showers throughout the night.
	SundaySep 13	80°F27°C	68°F20°C	0.15 in3.7 mm· 23%	52%	Showers	SSW 10 mph16 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 68°F20°C. Breezy from the SW at 10 mph16 km/h. 22% chance of showers throughout the day. NightPartly cloudy, with a low around 69°F21°C. Breezy from the SSW at 9 to 10 mph15 to 16 km/h. 23% chance of showers throughout the night.
	MondaySep 14	80°F27°C	68°F20°C	0.17 in4.4 mm· 20%	50%	Showers	SSW 10 mph15 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 68°F20°C. Breezy from the SSW at 10 mph16 km/h. 19% chance of showers throughout the day. NightPartly cloudy, with a low around 69°F20°C. Breezy from the SSW at 9 to 10 mph15 to 16 km/h. 20% chance of showers throughout the night.
	TuesdaySep 15	77°F25°C	66°F19°C	0.15 in3.8 mm· 18%	46%	Showers	SW 10 mph15 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 66°F19°C. Breezy from the WSW at 10 mph16 km/h. 18% chance of showers throughout the day. NightPartly cloudy, with a low around 68°F20°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 17% chance of showers throughout the night.
	WednesdaySep 16	76°F25°C	64°F18°C	0.11 in2.9 mm· 15%	36%	Showers	WSW 9 mph15 km/h
DayPartly cloudy and warm, with a high of 76°F25°C and morning low of 64°F18°C. Breezy from the W at 10 mph15 km/h. 13% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F19°C. Breezy from the WSW at 9 mph14 km/h. 15% chance of showers throughout the night.

Nearby Cities

Round Lake3 mi4 km Round Lake Beach3 mi5 km Mundelein6 mi10 km Libertyville6 mi10 km Gurnee7 mi12 km Vernon Hills9 mi15 km

About This Forecast

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Coordinates: 42.3445°N, 88.0417°W·Elevation: 239m·Timezone: America/Chicago·Population: 20,915